EP0227891A3 - Transducer and related circuitry - Google Patents

Transducer and related circuitry Download PDF

Info

Publication number
EP0227891A3
EP0227891A3 EP86112308A EP86112308A EP0227891A3 EP 0227891 A3 EP0227891 A3 EP 0227891A3 EP 86112308 A EP86112308 A EP 86112308A EP 86112308 A EP86112308 A EP 86112308A EP 0227891 A3 EP0227891 A3 EP 0227891A3
Authority
EP
European Patent Office
Prior art keywords
analog input
input signal
output
converter
limit value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP86112308A
Other versions
EP0227891B1 (en
EP0227891A2 (en
Inventor
Hideaki C/O Omron Tateisi Nakamura
Tamotsu C/O Omron Tateisi Shimamori
Shinichi C/O Omron Tateisi Murashige
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP19671485A external-priority patent/JPS6256816A/en
Priority claimed from JP60215645A external-priority patent/JPS6273118A/en
Priority claimed from JP60241809A external-priority patent/JPH0812211B2/en
Priority claimed from JP24180885A external-priority patent/JPS62101126A/en
Application filed by Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to AT86112308T priority Critical patent/ATE83070T1/en
Publication of EP0227891A2 publication Critical patent/EP0227891A2/en
Publication of EP0227891A3 publication Critical patent/EP0227891A3/en
Application granted granted Critical
Publication of EP0227891B1 publication Critical patent/EP0227891B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D1/00—Measuring arrangements giving results other than momentary value of variable, of general application

Abstract

In this transducer, for converting an analog input signal into an analog output signal whose level corresponds to the level of the analog input signal, there are included: an A/D converter for converting the analog input signal into a digital signal; an input device comprising a plurality of switches; an upper limit setting means for setting an upper limit value for the analog input signal, according to operation of the switches; a lower limit setting means for setting a lower limit value for the analog input signal, according to operation of the switches; a storage device, for storing a current value of the digital signal output by the A/D converter; a comparison means for comparing the current value of the digital signal output by the A/D converter as converted from the analog input signal, and the upper limit value and the lower limit value, all of which are stored in the storage device; an output means for producing an output when the comparison executed by the comparison means indicates that the current value of the digital signal output by the A/D converter as converted from the analog input signal has exceeded the upper limit value, or has dropped below the lower limit value; and a D/A converter for converting the digital signal output by the A/D converter as converted from the analog input signal into an analog output signal whose level corresponds to the level of the analog input signal. Variations on this theme are also disclosed.
EP86112308A 1985-09-05 1986-09-05 Transducer and related circuitry Expired - Lifetime EP0227891B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86112308T ATE83070T1 (en) 1985-09-05 1986-09-05 CIRCUIT FOR A TRANSMITTER.

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP19671485A JPS6256816A (en) 1985-09-05 1985-09-05 Transducer
JP196714/85 1985-09-05
JP60215645A JPS6273118A (en) 1985-09-27 1985-09-27 Transducer
JP215645/85 1985-09-27
JP60241809A JPH0812211B2 (en) 1985-10-28 1985-10-28 AC effective value-DC conversion circuit
JP24180885A JPS62101126A (en) 1985-10-28 1985-10-28 Ripple eliminating circuit
JP241809/85 1985-10-28
JP241808/85 1985-10-28

Publications (3)

Publication Number Publication Date
EP0227891A2 EP0227891A2 (en) 1987-07-08
EP0227891A3 true EP0227891A3 (en) 1989-05-03
EP0227891B1 EP0227891B1 (en) 1992-12-02

Family

ID=27475829

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86112308A Expired - Lifetime EP0227891B1 (en) 1985-09-05 1986-09-05 Transducer and related circuitry

Country Status (4)

Country Link
US (3) US4882584A (en)
EP (1) EP0227891B1 (en)
AT (1) ATE83070T1 (en)
DE (1) DE3687222T2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2722351B2 (en) * 1989-11-29 1998-03-04 キヤノン株式会社 Imaging signal processing device
JP2608168B2 (en) * 1990-08-31 1997-05-07 三菱電機株式会社 Semiconductor test equipment
US5654739A (en) * 1992-08-20 1997-08-05 Yokogawa Electric Corporation Controller including multi-function

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3564389A (en) * 1969-05-16 1971-02-16 Peter L Richman Ac to dc converter
GB1577900A (en) * 1976-03-08 1980-10-29 Yokogawa Electric Works Ltd Effective value converting circuit
DE3244878A1 (en) * 1981-12-09 1983-06-16 The Bendix Corp., 48076 Southfield, Mich. DETECTING DEVICE FOR FLAMMABLE GASES
EP0097479A2 (en) * 1982-06-17 1984-01-04 Honeywell Inc. Adjustable process variable transmitter
US4494399A (en) * 1982-11-10 1985-01-22 Becton, Dickinson & Co. Toxic gas detection system calibrator
EP0141132A1 (en) * 1983-09-13 1985-05-15 International Business Machines Corporation Monitoring and alarm system for custom applications
JPS60111166A (en) * 1983-11-21 1985-06-17 Takemoto Denki Keiki Kk High frequency digital display setting device

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922990A (en) * 1956-12-20 1960-01-26 Information Systems Inc Data reduction system
US3495074A (en) * 1966-01-17 1970-02-10 Ibm Digital control system with integral clamping
US3509369A (en) * 1967-07-12 1970-04-28 Ibm Absolute value function generator
US3628160A (en) * 1969-12-22 1971-12-14 Dana Lab Inc Converter system
JPS5027390B1 (en) * 1970-05-12 1975-09-06
DE2137281B2 (en) * 1971-07-26 1972-05-25 Hewlett-Packard GmbH, 7030 Böblingen EFFECTIVE VALUES
US3987435A (en) * 1973-11-28 1976-10-19 Kabushiki Kaisha Suwa Seikosha Analog-to-digital converter utilizing time reference for effecting conversion
US4264898A (en) * 1978-02-27 1981-04-28 The Bendix Corporation Analog to digital converter for electronic engine control systems
JPS5679908A (en) * 1979-12-05 1981-06-30 Fuji Electric Co Ltd Analog indicator
JPS5943408A (en) * 1982-09-02 1984-03-10 Toshiba Corp Alarm annunciator
US4567466A (en) * 1982-12-08 1986-01-28 Honeywell Inc. Sensor communication system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3564389A (en) * 1969-05-16 1971-02-16 Peter L Richman Ac to dc converter
GB1577900A (en) * 1976-03-08 1980-10-29 Yokogawa Electric Works Ltd Effective value converting circuit
DE3244878A1 (en) * 1981-12-09 1983-06-16 The Bendix Corp., 48076 Southfield, Mich. DETECTING DEVICE FOR FLAMMABLE GASES
EP0097479A2 (en) * 1982-06-17 1984-01-04 Honeywell Inc. Adjustable process variable transmitter
US4494399A (en) * 1982-11-10 1985-01-22 Becton, Dickinson & Co. Toxic gas detection system calibrator
EP0141132A1 (en) * 1983-09-13 1985-05-15 International Business Machines Corporation Monitoring and alarm system for custom applications
JPS60111166A (en) * 1983-11-21 1985-06-17 Takemoto Denki Keiki Kk High frequency digital display setting device

Non-Patent Citations (7)

* Cited by examiner, † Cited by third party
Title
Electrical World, Vol. 185, No. 12, June 15, 1976, pages 137-138; McGraw Hill Publ. Co., New York, US, "Data-acquisition system". *
Elektronique et Microelektronique Industrielles, No. 151, February 15, 1972, pages 49-53, J.C. MAILLET: "Circuit de mesure de la valeur efficace d'un signal electrique". *
IBM Technical Disclosure Bulletin, Vol. 14, No. 2, July 1971, pages 523-524; New York, US, H.A. HIGUCHI: "Active equivalent series resistance filter". *
IEEE Transactions on Instrumentation and Measurement, Vol. IM-20, No. 4, November 1971, pages 313-319, IEEE, New York, US, P. RICHMAN et al.: "A new fast computing RMS-to-DC conversion". *
Measurement Techniques, Vol. 23, No. 5, May 1980, pages 454-457; Plenum Publ. Corp., New York, US, N.N. ZHELBAKOV et al.: "Transducer of effective AC into DC voltages". *
PATENT ABSTRACTS OF JAPAN, Vol. 5, No. 146 (P-80)(818), September 16, 1981; & JP-A-56 079 908 (FUJI DENKI SEIZO K.K.) 30-06-1981 *
PATENT ABSTRACTS OF JAPAN, Vol. 8, No. 144 (P-284)(1581), July 5, 1984; & JP-A-59 043 408 (TOKYO SHIBAURA DENKI K.K.) 10-03-1984 *

Also Published As

Publication number Publication date
EP0227891B1 (en) 1992-12-02
US4875016A (en) 1989-10-17
EP0227891A2 (en) 1987-07-08
US4881039A (en) 1989-11-14
ATE83070T1 (en) 1992-12-15
US4882584A (en) 1989-11-21
DE3687222T2 (en) 1993-07-01
DE3687222D1 (en) 1993-01-14

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